Unhide rtld_db_dlactivity()

Since linker is built with -fvisibility=hidden rtld_db_dlactivity()
if hidden from gdb.  Unhide it otherwise gdb may not know linker
activity and rescan solib

Change-Id: Ia8cd8d9738c6ea5696ba2ef0ebf2cf783f9ca70a
merge in jb-mr0-release history after reset to jb-dev
merge in jb-release history after reset to jb-dev
merge in jb-release history after reset to jb-dev
Upgrade to dlmalloc 2.8.5.

Move dlmalloc code to upstream-dlmalloc to make pulling upstream changes
easier.
Declare pvalloc and malloc_usable_size routines present in malloc.h but with
missing implementations. Remove other functions from malloc.h that have
no implementation nor use in Android.

Change-Id: Ia6472ec6cbebc9ad1ef99f4669de9d33fcc2efb4
Revert "Upgrade to dlmalloc 2.8.5."

This reverts commit 5037b101df060ea6a86667b8bc19e534b337e58d.
Merge branch 'jb-release' of https://android.googlesource.com/platform/bionic into aosp
Fix <sys/klog.h> to correspond to the kernel operations.

This makes the constants correspond to those in the Linux kernel's
include/linux/syslog.h, but keeping our old badly-named constants for
source compatibility.

Change-Id: Ia47d1299205754cbfffd29ed48b497b53d1edaae
Merge branch 'jb-mr0-release' of https://android.googlesource.com/platform/bionic into aosp-merge
Merge "Fix <sys/klog.h> to correspond to the kernel operations." into jellybean
Merge remote-tracking branch 'origin/jellybean' into jb